Warp stop-motion for looms.



D. OSGOOD.

WARP STOP MOTION FOR LOOMS.

APPLICATION FILED FEB.24,1913.

1,1 16,321 Patented Nov. 3, 1914.

- thread eye 6;

U ED STATES PATENT OFFICE.

DANA OSGOOID, OF HOPEDALE, MASSACHUSETTS, ASSIGNOI-t TO DRAPER CCMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

WAR]? STOP-MOTION FOE LOOMS.

To HZZ whom it may concern Be it known that I, DANA Oseoon, of Hopedale, Vorcestercounty, Massachusetts, have invented a new and Improved Warp Stop-Motion for Looms, of which the following is a specification.

The improvements are illustrated in the accompanying drawings, in which Figures 1 and 2 are vertical cross'sections of so much of a loom as is necessary -to enable the invention to be understood, the two figures showing similar but different arrangements. I

In the drawings, A, B, are two banks of thin sheet metal drop bars or detectors, each detector havin a longitudinal slot a, and a D, are two stationary guide bars, each of which extends through the slots at, in one bank or row of the detectors; E, F, are upper lease rods, each of which is immediately above one of the guide bars and one of the banks of detectors; and G, H, are lower lease rods on opposite sides of and alongside the two banks of detectors. Each warp thread passes through the eye b, of one of the detectors and normally supports that detector, which is thus suspended. There are as many detectors in both banks as there are warp threads in the loom. The rods E, F, G, H, divide the warp threads into two intersecting planes, the intersection being between the two banks of detectors. The detectors are suspended from the bottom sheds. One-half the warp threads pass beneath the rod E, and over the rod H, and the other half of the warp threads pass over the rod F, and under the rod G. The head of each detector is normally well below the rod above it, so that a detector cannot come in contact with any thread except that from which it was suspended. .Each detector is free to move vertically both up and down and laterally both ways, so that the detectors accommodate themselves to the threads and the strains thereon and chafing is reduced to a minimum.

In case a warp thread breaks, its detector drops, being guided by its guide bar C, or D, and is suspended in its dropped abnormal position by the guide bar. A detector in its dropped or abnormal position effects the stoppage of the loom through any of the well known cooperating devices, electrical or mechanical, in accordance with the known teachings of the art. The cooperating instrul'nentalities may be electrical, such as shown, for example, in the reissued patent of Coldwell and Gildard, No. 11,923, July 30, 1901, or they may be mechanical, such as shown, for example, in the patent of Ambler, No. 863,130, August 13, 1907.

The arrangement shown in Fig. 2, is similar to that shown in Fig. 1, excepting that the rods G, and H, are nearer the rods E, and F, and the detectors than in Fig. 1.

In the arrangement shown in Fig. 1, a detector can never come in contact with the lease rod above it or with any of the lease rods. In the construction shown in Fig. 2, no detector while its weight is being supported by its thread comes in contact with any of the lease rods and, consequently, no thread can drag along its detector when its detector is held against a lease rod.

I claim:

1. A warp stop motion for looms having, in combination, two upper lease rods above which the two planes of the warp threads respectively pass; a detector guide directly beneath each of the upper lease rods; two lower lease rods beneath which the two planes of warp threads respectively pass, each plane of warp threads which passes beneath one of the lower lease rods extending below and out of contact with the. corcorresponding upper lease rod and guide; lower lease rods being out of line with the corresponding upper lease rod and guide; and a bank of detectors for each plane of warp threads suspended therefrom immediately beneath one of the upper lease rods and being guided by the guide beneath such upper lease rod so as to be out of normal contact with any of the lease rods, there be ing one detector for each warp thread.

2. A warp stop motion for looms having, in combination, two upper lease rods above which the two planes of the warp threads respectively pass; two detector guides beneath the upper lease. rods; two lower lease rods beneath which the two planes of warp threads respectively pass, each plane of warp threads which passes beneath one of the lower lease rods extending below and out of contact with the corresponding upper lease rod, and each of the lower lease rods being out of line with the corresponding upper Patented Nov. 3, 1914.

g2 mmem lease rod and guide; and a bank of detec In Witness whereof, I have hereunto tors for each plane of Warp threads suspends: signed my name in the presence of two sub- -ed therefrom beneath one of the upper lease scribing witnesses.

rods and being uided. by one of said guides DANA OSGOOD. so as to be out 0% normal contact with any of Witnesses the lease rods, there being one detector for FRANK J. DUTGH'ER,

each Warp thread. J. L. REMINGTON, Jr.

Fi s 

